Plug connection for electrical work.



A. A. WARNER.

PLUG OONNEGTION FOR ELEGTRIGAL WORK.

APPLIOATION PILED MAY 1. 1912.

1,059,650. Patentd'Apr. 22, 1913.

TT w [U i/255555.- Ibn/ear" liti e ALONZO A. WARNER, OF 1\T EW BRITAIN, CONNECTICUT, ASSIG-NOR TO LANDERS, FRARY CLK, OF NEW BRITAIN, CONNECTICUT, A CORPORATION.

PLUG- CONNCTION FOR ELECTRICAL WORK.

Specification of Letters atent.

Patented Apr& 22., 19313.

Application filed May 1, 1912. Serial No. 694326( 1 To all 'whom it may cnccrn Be it known that I, ALoNzo A. VVARNER, a, citizen of the United States, residing at New Britain, in the County of Hartford and State of Connecticut, have invented certain' tacles ot my connection', 'together jwith a' breken View of a portion of the covered wires to which they are ettached. Fig. 2 is an end view of the plug members ot my connection together with a hood within which they are rnounted.` Fig. 8 is an enlarged sectional view of 'one of the receptaciee shown in ig. 1, thesarne being tairen on the line a' w.: Fig. 4: is an end view ot the same less the case or shell. Fig. 5 is, a side elevation ot the same; Fig. 6 is atrans verse section on the line y y of Fig, i; Fig. 7 is a plan View on a smaller' saleotthe blank from which the yeldng aws and i shanit of the plug receptacle are tormed.

Fig, 8 is a plan View 'of afdouble case .or 'shell :tor two plug receptacles ot 'my' connection together with a portion of the wires attached thereto. Fig. 9 is an end view' ot the same. Fig. 10 is a planview .or the same with one-half ot the case orshell* .removed; Fig. ll is a sectional View' ot the said case or shell on, the line e 'e of Fig. 8;

A designates the case or shell of suitable non-conducting 'materiali' and preter ably cylindrical in form. That end :from which the wire or cablel is eXten-ded is bored cylindrcally for nearly'half of its length and from the end of the bore toward the' other end is provided with' an axialopening or chamber ot substantially a -trien gular form in cross ,section while a short porti'on at the end is round and of a size' to admit none' of the 'pins .or plugs 13. 'lt forin' the yielding jaws and shank 14 of' the plug'or pin re-` ceptacle of a single' piece of resilient sheet metal from a blankot the form shown in Fig. 7, in which 15 is the shank that is doubled upon itself 'on the transverse broken line and thenidrilled and'- tapped to i yielding jaws and their integral sheting through the collars 21 and asbestoe -may be wadded with asbestos 22 h receive a binding post as indcated by the two broken circles. The blank is slotted from -ts outer end inwardly between the i jaws 15 and 17 and substantially in the iine of the edge of the shank 14, and froni its shank end outwardly between the jaws 16 and 17' leaving shortconnectons 18 between the said jaws and at their opposite ends asshown. Aftendoubling the shank on itself as shown in order to give sui'tlcient depth of hole tor the thread of the binding post '19 the blank is bent along the line of the sonnections 18 in the direction to turn the jaws l and 16 downwardly from the position shown in F 7. An open space is iett between the confronting edges of the jnws 415 and 16 as shown in Fgs. i 6.

connection with a triangular chemhe -or thenn the shell consttute the main me -tre of my lnventon The wres 20 afte :22, are connected with the shenks M- thr 't d the binding post 19. The jaws and connected parte are then inserted within the shells or cases A A and secured theren by the screws 23 H desired, instead of two shells or beses the two wres may be connected with two 'plugreceptaclea in a double case, as in 8 to 11, in which AQ- designates the lower half of the shell or case and the cap or upper half. These are divided longtudineily and held together by bolts Q t. The lower ,half is chainbered out with a fiat face or bottom wall 95 to receive the back or middle Jaw 17 as shown in Fgs. 10 and ti. From ths chamber there s a passage for 'the wires 20, the passages for the two wires running together at the middle 'where the two wires properly covered may extend out through a single opening 26 and both wires "the other half A is similarly, recessed only the side walls 28 of its jew chamberare incii'ned to substantially the same angle as the jaws 15 andl, the said walls being deep enough and far enough apart to freely accommodate the said j aws," the outer edges of which are not brought quite together as shown in Fig. 10. The two pins or plugs 13 are shown as mounted within a hood 27 at the rear end thereof, the said hood and plug beingintended for application to electrically heated percolators or other elec 'fil tricaldevices. The two cases shown in Figs. 1 and 2, or the one case shown in Figs. 8 to 11, and their plug receptacles may either of them be connected with the said pins.

By my improvement the yielding jaws are of a simple and inexpensive Construction and may be Conveniently placed within the The shank for the binding' being unduly bent out 'of shape. There is 'the said three jaws.

one wall in the chambered cases for each of By constructing the three jaws from a slotted blank; with the Slots extended from the opposite ends of the jaws, the jaws are resilient for substantially their whole length and will vield in various directions as to nsure a, good connection for the whole length of that portion of the pin or plugs received therein.

I claim as my' inventionz 1. In a plug connection, the resilientjaws formed of sheet metal bent into triangular form, the three sides thereof constituting three jaws, and a protecting case having a chamber .for said jaws of an angular form in cross section' with walls for the three sides of the said three jaws.

` 9. Tn a -plug connection the reslent ews formed ot' sheet metal slotted fromthe op"- posite ends of the jaws on opposite sides of the niddle jaw, one of the other jaws being connected to the said middle jaw by a connection at one end and the other end of the other jaws being connected With the middle one of the said triangular sides and bnding post mounted on one end of the said shank.

4. In a plug connection, the resilient jaws and shank formed of sheet metal in trianglar form in cross section, a bindinggpost mounted in the said shank, a shell or case having an'axial opening therethrongh, a portion of the said opening being of an angular form With walls for the three jaws, and a portion thereof being cylind rical, a collar for the wire within the said cylindrical portion of the said opening, and means for securing the said collar within said case.

' ALONZO A. WARNER.

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